Guest Stars Chelah Horsdal as Margie Mularkey Paul McGillion as Bud Mularkey Jason McKinnon as Sean Mularkey Quinn Lord as Young Sean Jon-Michael Ecker as Max Brody Synto D. Misati as Robbie '74 Tara Wilson as Julia Patrick Sabongui as Professor Chad Wiley Thomas Cadrot as Robbie Co Starring Brendan Taylor as Mutt Stacee Copeland as Aunt Pam Zen Shane Lim as Firefighter Charlie Mike Mitchell as Cop Elan Ross Gibson as Grandma Karissa Ketter as Britta Trevor Jones as Cop 1 John Specogna as Priest